Drop these into a spreadsheet, or keep them on paper. Set your baseline on day 1, then check in at day 30, 60 and 100.
Keyword tracker
A focused set of relevant queries, their landing pages, market, device, and observed position. Record declines as well as improvements.
Content pipeline
What you're publishing and what it targets, so nothing slips.
Backlink log
Relevant outreach and earned links, with dates and destination pages. Evaluate editorial value and referral outcomes rather than a fixed link quota.
Results
Comparable measurements at day 1, 30, 60, and 100. Keep definitions and date ranges consistent; changes can have several causes.
Keeping score is the boring little habit that turns "I think it's working" into "look at the chart".